This is an absolutely beautiful camera, and in great shape.
The Werra cameras were a striking minimalist design from East Germany, and this is one of the harder models to find, let alone one that is as complete as this (including lens hood, leather case, and working meter). Werras routinely appear in the list of most beautiful cameras ever made.
The Werra 4 features include: a super sharp Zeiss Tessar lens, a unique way of advancing the film and cocking the shutter where you rotate the ring around the lens, a lens cover that doubles as a lens hood, interchangeable lenses, a very compact size, as well as a rangefinder and working light meter.
I bought this one from a camera repair guy who did the work on it, and it's in great shape. I'm only selling it because I recently got a Werra 3 (very similar, but no light meter), and I rarely need the meter these days.